Interesting
I just make a simple workbook with 3 sheets. Then tried to print whole workbook to PDF (Primo PDF)
It only sent the first to sheets (as separate print files)
Added a worksheet
Same issue.
Tried the microsoft image printer instead (prints to tiff files)
Same problem - only the first two worksheets.
I have a four sheet excel file that I have to produce every month and I use the print 'entire workbook' option to send it to pdf. No problem. After seeing this thread, I sent two copies directly to the printer and tried turning collate on and off. Again, no problem.
Having seen your post, I tried with a new workbook and came across similar behaviour. Two worksheets would be in one pdf and the third into a second file. When I tried sending two copies of the entire workbook directly to the printer, they always came out collated, even if the box was unticked.
I thought about the differences between the file I know works and the one that doesn't. One was the print area, so I defined print areas on each sheet of my new file (set print area), and now it works in pdf, but it doesn't look as though I can 'uncollate' it when I send it to the printer! I haven't got time at the moment to try to figure out why my working file works and the other don't
It does look like setting the print area might allow the workaraound via a pdf, but it is all very strange!